Hi Ken,
Here are some logs from tonight. I let the temp drop about .75 C, and still no movement from the focuser. I have it set to -4 steps per degrees C, so it should have moved it at least two or three steps by then. At that point I started to move it manually, since I was actually imaging and didn't want to let the focus drift too far.
https://www.dropbox.com/sh/596u97omjopir9a/AACsIGXEKHj8ptdeFG-4tsJoa?dl=0